论文标题
LHC上相关的Squark-Electroweakino生产的软gluon重新召集
Soft gluon resummation for associated squark-electroweakino production at the LHC
论文作者
论文摘要
我们对LHC在LHC上的squark和electroweakinos相关的产生对近代领先的对数（NLL）精度进行阈值重新召集计算。提出了与过程相关的软异常维度和硬匹配系数的分析结果。重新召集的结果与QCD的近代领先顺序（NLO）的固定顺序预测相匹配，QCD中的固定订单预测已概括为具有非全美裔挤压质量和混合的场景。从数值上讲，NLL贡献分别从1 TEV到3 teV的山squark群体将总NLO横截面提高到$ 2 \％$ $，并且它们减少了预测对分解和重量级化量表的依赖性，从典型的$ \ pm10 \％\％$ \％$ \％$ \ pm5 $ \ pm5 \％$ \％$ \％\％$ \％。我们的NLO和NLO+NLL计算已在Resummino公开程序中实施。
We perform a threshold resummation calculation for the associated production of squarks and electroweakinos at the LHC to the next-to-leading logarithmic (NLL) accuracy. Analytical results for the process-dependent soft anomalous dimension and the hard matching coefficient are presented. The resummed results are matched to fixed-order predictions at next-to-leading order (NLO) in QCD, which are generalised to scenarios with non-universal squark masses and mixings. Numerically, the NLL contributions increase the total NLO cross section by $2\%$ to $6\%$ for squark masses ranging from 1 TeV to 3 TeV, respectively, and they reduce the dependence of the predictions on the factorisation and renormalisation scales from typically $\pm10\%$ to below $\pm5\%$. Our NLO and NLO+NLL calculations have been implemented in the publicly available program Resummino.
